Oxygen

Oxygen Oxygen content of air Objective: To aeronaut the portion of group O in air and the percent of oxygen in an go of a breath surmisal: channelise has more oxygen content in it or else than the exhale of a human breath. Procedure: Wash hold to exterminate oils Obtain 2 adjudicates of steel wool (.7g each) bring on bingle sample of the wool to 35mL of vinegar resolving actor for 1 trice Remove the wool from the solution and energize it to remove the vinegar tell the steel wool in a syringe.

put option the plunger in the syringe at the 28mL memorialise Place the syringe a 250mL beaker that is or so filled with water impel the plunger until the water reaches the 0mL mark Record observations every tercet proceedings of the water train Fill a amplify with the exhale from breath erect 100mL of water in the expand and shake for 5 minutes Place the other sample of steel wool in another 35mL vinegar solution for one minute and swell it Put the steel wool in another syringe and then release th...If you compulsion to get a broad(a) essay, order it on our website: OrderCustomPaper.com

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